脉冲激光抽运铷原子钟理论与实验研究

发布时间：2018-01-15 12:31

本文关键词：脉冲激光抽运铷原子钟理论与实验研究　出处：《天文学报》2013年05期 　论文类型：期刊论文

【摘要】：正原子钟作为导航系统的星上时间基准,是卫星导航系统有效载荷的核心部件,其性能决定着卫星导航定位系统的定位精度和寿命.目前星载原子钟主要为传统铷原子钟,从可靠自主运行及技术多样化角度出发,开展新型铷原子钟研究具有重要意义.基于传统铷原子钟体积小、重量轻、结构简单等优点,本文对新型高精度原子钟-脉冲激光抽运(POP)铷原子钟进行了深入的理论和实验研究.采用在时间上分离的脉冲激光抽运、Ramsey微波脉冲与原子相互作用方式,原子为二能级系统,消除了光场与微波场的耦合,从而可以获得更好的中长期稳定度.获得微波和光学Ramsey信号,采用微波探测方式,实现了原子钟的闭环锁定,短期稳定度达国际先进水平.同时开展了微波场引起EIT(electromagnetically induced transparency)信号
[Abstract]:Is the atomic clock as the navigation system of satellite time reference, is the core part of the payload of the satellite navigation system, its performance determines the positioning accuracy and the life of the satellite navigation and positioning system. The satellite atomic clock is mainly traditional rubidium atomic clock, starting from the independent operation and reliable technological diversification Perspective, it has important significance to carry out research model rubidium atomic clock. Based on the traditional rubidium atomic clock has the advantages of small size, light weight, simple structure, this new type of high-precision atomic clock pulse (POP) laser pumped rubidium atomic clock is studied theoretically and experimentally in detail. By using pulsed laser pumped separation in time, Ramsey microwave pulse and atoms the interaction of two atomic level system, eliminates the coupling field and microwave field, which can provide better long-term stability in degrees. For microwave and optical Ramsey signal by microwave detecting The closed loop locking of the atomic clock has been achieved, and the short-term stability has reached the international advanced level. At the same time, the EIT (electromagnetically induced transparency) signal induced by the microwave field has been carried out.

【作者单位】：中国科学院国家授时中心;
【分类号】：P127
【正文快照】： 原子钟作为导航系统的星上时间基准,是卫星导航系统有效载荷的核心部件,其性能决定着卫星导航定位系统的定位精度和寿命.目前星载原子钟主要为传统铷原子钟,从可靠自主运行及技术多样化角度出发,开展新型铷原子钟研究具有重要意义.基于传统铷原子钟体积小、重量轻、结构简单

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